Ammonia Technician Job Description The Ammonia Technician installs, starts up, and commissions OEM ammonia and natural refrigerant systems, ensuring they operate safely, efficiently, and in full alignment with design specifications. This role combines hands-on mechanical and electrical work with PLC-based control system integration, performance testing, and detailed documentation. The technician also provides onsite training to facility personnel and travels frequently to customer sites across the United States. Responsibilities Perform detailed physical inspections and startup procedures for OEM refrigeration units, confirming that all mechanical and electrical components are installed correctly and safely. Conduct system startup activities, including verification of piping, welds, electrical connections, and overall system integrity prior to commissioning. Integrate and test PLC-based control systems by performing I/O checks and validating that all inputs and outputs function correctly. Verify that the control system operates according to the designed sequence of operations, making adjustments as needed to ensure proper system performance. Carry out performance testing, including pressure tests, vacuum pulls, and refrigerant charging on ammonia and other natural refrigerant systems. Diagnose and resolve complex mechanical, thermodynamic, and electrical issues that arise during initial system operation and commissioning. Troubleshoot PLCs and control loops, including identifying and correcting PID loop tuning issues to optimize system stability and performance. Read and interpret complex Piping and Instrumentation Diagrams (P&IDs) to verify system configuration and support troubleshooting activities. Perform field service work on ammonia refrigeration systems, including inspection, adjustment, and repair of system components as required. Support piping and welding-related tasks as they relate to system installation and commissioning, ensuring work meets quality and safety standards. Conduct onsite training sessions for facility managers and maintenance staff, explaining system operation, safety procedures, and basic troubleshooting techniques. Prepare and deliver detailed commissioning reports that include setpoints, sensor calibrations, test results, and any as-built deviations for the engineering team. Maintain accurate records of work performed, including tests conducted, issues identified, corrective actions taken, and parts used. Travel frequently to job sites across the United States, including ice arenas and other facilities, to install, start up, and commission chiller and refrigeration units. Essential Skills Hands-on experience with ammonia refrigeration systems, including installation, startup, and commissioning activities. Proficiency in commissioning industrial refrigeration systems, including performance testing, pressure testing, vacuum pulls, and refrigerant charging. Strong PLC troubleshooting skills, including I/O testing and verification of control logic and sequence of operations. Solid electrical troubleshooting abilities, including working with control panels, sensors, and field wiring. Demonstrated field service experience in industrial or commercial refrigeration environments. Practical knowledge of piping systems related to refrigeration, including understanding of layout, connections, and system flow. Basic welding skills or familiarity with welding practices used in refrigeration piping installations. Mandatory EPA Section 608 Universal Certification. Ability to read and interpret complex Piping and Instrumentation Diagrams (P&IDs). Proficiency in diagnosing and tuning PID control loops to resolve stability or performance issues. Willingness and ability to travel frequently, often 50-75%, to various job sites across the United States. Additional Skills & Qualifications Experience with natural refrigerants such as CO2 (R-744) and Ammonia (NH3) is a strong plus. Experience commissioning OEM refrigeration or chiller units in industrial or commercial settings. Comfort working in field environments, including customer facilities such as ice arenas. Strong communication skills to effectively train facility managers and maintenance staff on system operation and safety. Attention to detail in documentation, including recording setpoints, sensor calibrations, and as-built deviations. Ability to collaborate with engineering teams by providing clear, accurate feedback from field commissioning activities. Why Work Here? You join a team that invests in your success with comprehensive support and practical benefits tailored to field technicians. You gain access to an HSA structure designed to minimize out-of-pocket medical expenses, a bonus program that rewards performance, and flexible travel reimbursement options that recognize the realities of life on the road. The organization provides the tools and welding gear you need, reducing your personal costs and ensuring you can focus on doing high-quality technical work. You work in an environment that values your expertise, supports continuous learning, and offers meaningful, hands-on projects across diverse locations. Work Environment You work in a combination of shop and field environments. While at the home base, you operate in a shop setting where you prepare equipment, tools, and systems for deployment. A significant portion of your time involves traveling to job sites across different states in the USA, including ice arenas and similar facilities, to install and commission chiller and refrigeration units. The role is highly field-oriented, with frequent travel often ranging from 50-75%. You use a variety of tools and equipment, including PLC-based control systems, electrical test instruments, welding gear, and piping tools. The company supplies the necessary tools and welding equipment, so you can focus on safe and efficient system installation and commissioning. Work hours may vary depending on project schedules and travel requirements, and you adapt to different facility conditions while maintaining a professional appearance and adherence to site-specific safety and operational guidelines. Job Type & Location This is a Permanent position based out of Burnsville, MN. Pay and Benefits The pay range for this position is $90000.00 - $145600.00/yr. HSA - don't have to pay anything out of pocket Bonus structure Flexible options when it comes to travel reimbursement Will provide tools and welding gear. Workplace Type This is a fully onsite position in Burnsville,MN. Application Deadline This position is anticipated to close on Aug 3, 2026. About Aerotek Aerotek® Inc. provides staffing and services solutions in manufacturing, logistics, construction, aviation, facilities and maintenance. We provide the expertise, solutions and people required to rise to the challenges of North American industry. Headquartered in Hanover, Md., Aerotek operates a unified network of over 200 offices across North America, supporting more than 18,000 clients each year. Aerotek is an Allegis Group company, the global leader in workforce and business solutions. To learn more, visit: Aerotek.com | 1-888-AEROTEK. Aerotek offers weekly pay, employee benefits including medical, dental & vision, life insurance, health advocacy and employee assistance programs, a 401(k) plan, and employee discounts. The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.
San Francisco Fair Chance Ordinance:
Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.
Massachusetts Lie Detector:
It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability. Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.
